As I mentioned last week, Google has spent a large part of 2009 testing various changes to their Search Engine Results Page, and the AdWords area is no exception.

Where AdWords was once easily recognized as the simple text ads at the top and right hand side of the organic results, over the last few years – this common description has become less and less correct.

This week, Google released a post to highlight just how much the Google AdWords ads have evolved. Here’s how they summed up their philosophy about AdWords evolution.

To provide a better search ads experience, we’ve been developing and testing a variety of new ad formats. These formats are focused on giving you the information you need, while retaining what you love about Google advertising: that the ads are relevant and useful.

Here’s some of the new ad formats you might experience in the Google SERPs for 2010:

• Google AdWords with Movie Trailers

• Google AdWords with Deep Site Links

• Google Local and AdWords merge for Local Businesses

• AdWords with Multiple Locations for Chains and Franchises

• Product Shopping with Images and Pricing

• Comparison Shopping Direct from the Main SERPs

There’s no doubt Google will continue to innovate and improve on their AdWords platform with the company not content to rest on their laurels.

As summed up by Susan Wojcicki, VP of Product Management:

While we experiment with new formats, we’ll remain loyal to our core principle: that getting the right ad to the right person at the right time matters. As we continue to think up innovative ways to give you the information you want, you’re likely to see even more ad formats until we pinpoint the most useful, relevant and engaging ones.